Difference observed with BNC RT latency

[regina.operation@…]

We observe a difference of latency in RTCM real time logs between BNC 2.12.17 and last BNC 2.13.4.

If a RT RTCM MSM7 flow doesn’t contain 1127 packet (MSM7 Beidou) and 1042 packet (Beidou ephemeris),

• When using BNC 2.13.4, latency looks good :

26-04-14 15:15:00 SAG100FRA1 Observations: Mean latency 0.27 sec, min 0.06, max 0.50, rms 0.29, 900 epochs, 0 gaps

• When using BNC 2.12.17 latency is increased of 1 second which looks abnormal (local network test conditions for this log) :

26-04-14 15:45:01 SAG100FRA1 Observations: Mean latency 1.27 sec, min 1.07, max 1.57, rms 1.28, 900 epochs, 0 gaps
If we add this Beidou packets, latency is the same for both versions.
Are you aware of that and if yes, can you tell us in which version it was fixed? Is it mentioned in changelog?

Thank you

CNES REGINA Team
Thierry Lawrence
regina.operation@…

[stuerze]

Dear Thierry Lawrence,

Thank you for this interesting observation. The latest bugfix with respect to the latency checker itself was done for version 2.12.16. Unfortunately, I currently have no idea, why adding BDS should improve the latency result.

But if you see no problem anymore, I'm fine with it.

Best regards, Andrea

PS: I'm sorry for the late answer, we have to check how 'team' is connected with us.